X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Funfold%2Fgr2_plus.ma;fp=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Funfold%2Fgr2_plus.ma;h=0000000000000000000000000000000000000000;hb=e8998d29ab83e7b6aa495a079193705b2f6743d3;hp=bd8d1a9be416f9203208d8505408c1a116a2629d;hpb=bde429ac54e48de74b3d8b1df72dfcb86aa9bae5;p=helm.git

diff --git a/matita/matita/contribs/lambda_delta/basic_2/unfold/gr2_plus.ma b/matita/matita/contribs/lambda_delta/basic_2/unfold/gr2_plus.ma
deleted file mode 100644
index bd8d1a9be..000000000
--- a/matita/matita/contribs/lambda_delta/basic_2/unfold/gr2_plus.ma
+++ /dev/null
@@ -1,40 +0,0 @@
-(**************************************************************************)
-(*       ___                                                              *)
-(*      ||M||                                                             *)
-(*      ||A||       A project by Andrea Asperti                           *)
-(*      ||T||                                                             *)
-(*      ||I||       Developers:                                           *)
-(*      ||T||         The HELM team.                                      *)
-(*      ||A||         http://helm.cs.unibo.it                             *)
-(*      \   /                                                             *)
-(*       \ /        This file is distributed under the terms of the       *)
-(*        v         GNU General Public License Version 2                  *)
-(*                                                                        *)
-(**************************************************************************)
-
-include "basic_2/unfold/gr2.ma".
-
-(* GENERIC RELOCATION WITH PAIRS ********************************************)
-
-let rec pluss (des:list2 nat nat) (i:nat) on des ≝ match des with
-[ nil2          ⇒ ⟠
-| cons2 d e des ⇒ {d + i, e} @ pluss des i
-].
-
-interpretation "plus (generic relocation with pairs)"
-   'plus x y = (pluss x y).
-
-(* Basic inversion lemmas ***************************************************)
-
-lemma pluss_inv_nil2: ∀i,des. des + i = ⟠ → des = ⟠.
-#i * // normalize
-#d #e #des #H destruct
-qed.
-
-lemma pluss_inv_cons2: ∀i,d,e,des2,des. des + i = {d, e} @ des2 →
-                       ∃∃des1. des1 + i = des2 & des = {d - i, e} @ des1.
-#i #d #e #des2 * normalize
-[ #H destruct
-| #d1 #e1 #des1 #H destruct /2 width=3/ 
-]
-qed-.